摘要: |
Described are the development and application of an original methodology for a comprehensive and consistent count of transportation-related employment in the United States. In addition, the study represents a general example of how transportation analysts can effectively use and combine classification-based data to answer specific crosscutting questions. The method involved computing the union of two different sets of transportation employment data: transportation industry data, counting all workers in industries that provide or support transportation, and transportation occupational data, counting all workers performing transportation functions. A union, instead of a straightforward sum, was used to avoid double counting of workers employed in the defined transportation and transportation-related industries. A broad definition of transportation-related industries and occupations was used, allowing a complete accounting of employment generated by transportation in the economy. It was concluded that transportation industries account for 13 million workers, or about 10% of total nonfarm employment of 128.4 million, and transportation occupations outside of transportation industries accounted for another 3.5 million workers, or about an additional 3% of nonfarm employment. Thus, about 16.5 million workers either work directly in or support transportation activity in the U.S. economy; this constitutes about 13%--approximately 1 in 8 jobs--of the nonfarm workforce. |